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Okay i try put in "new" memory stick, after that then i power on pc its start beeping(1 long beep and 2 short beep) in gigabyte site says that its memory error( https://www.gigabyte.com/Support/FAQ/816 ) i also try removing old ram and put in only "new" ram and the same happens, so that means "new" memory stick is not compatible with my motherboard or "new" ram stick have wrong voltages/timing settings? maybe i need bios update or try reset default settings?

I would say that your "new" ram is probably either not compatible with your board (not very likely in my opinion) or is faulty so should if possible be returned to the supplier. You can try resetting the bios memory settings to default but I would not expect a bios update to be required.